基于细节再现的高动态范围图像分层映射算法

doi:10.11772/j.issn.1001-9081.2014.04.1187

计算机应用 ›› 2014, Vol. 34 ›› Issue (4): 1187-1191.DOI: 10.11772/j.issn.1001-9081.2014.04.1187

基于细节再现的高动态范围图像分层映射算法

位春傲,谢德红,王琪,李蕊

江苏省制浆造纸科学与技术重点实验室(南京林业大学),南京 210037

收稿日期:2013-10-15 修回日期:2013-12-21 发布日期:2014-04-29 出版日期:2014-04-01
通讯作者: 谢德红
作者简介:位春傲(1989-),女,山东莱阳人,硕士研究生,主要研究方向:图像处理;
谢德红(1979-),女,江苏南京人,博士,主要研究方向:高动态范围图像处理、彩色视觉模型、多光谱色域映射;
王琪(1971-),女,河南上蔡人,副教授,博士,主要研究方向:数字化印前、色彩控制。
基金资助:
国家级大学生创新创业训练计划项目;江苏省高等学校大学生实践创新训练计划省级重点项目;江苏省制浆造纸科学与技术重点实验室开放基金项目

Detail-preserving hierarchical tone-mapping algorithm for high dynamic range images

WEI Chunao,XIE Dehong,WANG Qi,LI Rui

Jiangsu Provincial Key Lab of Pulp and Paper Science and Technology (Nanjing Forestry University), Nanjing Jiangsu 210037, China

Received:2013-10-15 Revised:2013-12-21 Online:2014-04-29 Published:2014-04-01
Contact: XIE Dehong

摘要/Abstract

摘要：

针对当前映射算法中亮度的映射函数非适性而引起对比度过度压缩的问题，以及映射时亮度变化改变图像细节可见性的问题，提出了一种基于细节再现的高动态范围(HDR)图像分层映射算法。该算法采用视觉响应曲线作为基础层的映射函数，根据图像局部适应性亮度动态地映射亮度；同时，在Stevens效应的思想基础上依据映射前后亮度变化获得补偿系数，拉伸或压缩细节层。测试结果表明：该映射算法所得图像能正确再现更多的可见细节。

Abstract:

Due to problems of over-compression by a non-adaptive mapping function, and changes of perceived contrasts for luminance shift during mapping, a hierarchical tone-mapping algorithm for detail-preserving was proposed. In this algorithm, the luminance-response curve adapting to each local luminance in High Dynamic Range (HDR) images, as a mapping function, was used to map luminances of the base layer. Then, compensation coefficients of the detail layer, for stretching or compressing details, were computed according to values of luminance shift based on Stevens' effect. The experimental results show that the proposed algorithm has good performance on preserving perceived details.

中图分类号:

TP391

位春傲谢德红王琪李蕊. 基于细节再现的高动态范围图像分层映射算法[J]. 计算机应用, 2014, 34(4): 1187-1191.

WEI Chunao XIE Dehong WANG Qi LI Rui. Detail-preserving hierarchical tone-mapping algorithm for high dynamic range images[J]. Journal of Computer Applications, 2014, 34(4): 1187-1191.

参考文献

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基于细节再现的高动态范围图像分层映射算法

Detail-preserving hierarchical tone-mapping algorithm for high dynamic range images

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